Everyone talks about mafless tuning, is there such thing as maf tuning?

[ryan101]

sorry it probly has been covered a million times but i can't find anywhere!
i have a very very stock s2 vx ss, i don't wanna spend big $$ all i want to do is nice cat back, high flow panel filter ( it has some kind of cai looks factory) ( 1 duct facing up next to the radiator and 1 pipe going behind the head light)

i want the car to look stock still so the air box has to stay,
so my question is, is there maf tuning and what do they tune? what does it cost and where in melb (near epping im from) can i talk to?

thanks

[The_Senator]

MAF Tuning is real.. It simply means they leave the MASS AIR FLOW (MAF) Meter in place to measure the incoming air, instead of calculating it when you go MAFLESS...

Same tune style really, just a little more refining with MAFLESS... MAF Tuning will always be cheaper - as there is less to do!

Hope this helps

[ryan101]

great help who does it?? and how much?? lol and what kind of improvement with just catbak and high flow panel?

another question is there much difference in 'off the shelf' cat backs? i have heard a twin 2 1/2 inch red back sounded good, but i was told not to go red back and go sureflo in the same size? as i said don't wanna spend to much

[The_Senator]

Mate.. You can either go with a MailOrder tune, that is a generic one.. Or you can go a Custom tune, where your car gets dyno time and the tune is done specific for your car..

Who does them - Where are you in this wide world? MailOrder can be done by many people - and can be posted out... Custom you'll have to go to the company...

Exhausts - are really up to you.. XForce, KPM, Sureflo.. How much do you want to spend, what noise and does drone annoy you..

Help any?

[Cúl-Báire]

You can tune the vehilce both with or without the MAF. In the case of the LSx engines significant gains are generally had by removing the MAF, and tuning it to suit. This usually results in more power, better economy and the like. Factory tunes although quite complex, are quite "safe"... IMO I'd keep the stock airbox, remove the MAF and run something like the smooth GTS MAF(less) pipe and get a mail order.

As for exhaust, any twin 2.5" will suffice, XForce, Sureflo, DiFilipo are some of the better ones.

[cracker]

dont bother tuning it unless your getting rid of the maff

get a vx gts intake pipe looks factory, because its a factory part

the $650 i spent getting a maffless plus the headers, exhaust rockers, cai and intake pipe, is the cheapest increase in power iv ever found
2000k went from 158 rwkw too 234rwkw, the car drive nicer, sounds better uses less fuel, idle is much smoother its almost like another car too drive, imo if you havent got a maffless done and you own an ls1 series vechical and have any interest at all in the way it drives youd get a mafless tune done.

i got mine done at lsx garage and im wrapped with it.

[ARATIC]

dont bother tuning it unless your getting rid of the maff

Not quite true, you will still gain 25-30kw going with a maf tune. The only difference with mafless is your losing the restriction of the air having to go through the maf, which I was told by my tuner is worth around 10kw

[DLFHUB666]

Since you wanna keep it looking stock maf tune is the way to go, your gains will be minimal keeping the stock airbox an what not, the reason for going mafless is the maf is a restriction so is the stockbox an convoluted pipe(spelling) thats why most people also get an OTR so bang for buck is not there the way you wanna go but you will get gains IMO just not worth the money spent. Xplode performance do them they are sponsors on here hit them up.

[rb26dett]

A good tuner should be able to get a maf tune very close to a mafless tune.

[ryan101]

im from Whittlesea, i don't wanna spend much

thats why im thinking cat back (i think im gonna go sureflo) and yeh im after a quietish exhaust with better flow and a high flow panel filter
im not after big power just want to get sum kind of tune into it, thats y im after maf tune. just want it to look as stock as i can

but every1 thanks for the help so far!!

[Cúl-Báire]

Since you wanna keep it looking stock maf tune is the way to go, your gains will be minimal keeping the stock airbox an what not, the reason for going mafless is the maf is a restriction so is the stockbox an convoluted pipe(spelling) thats why most people also get an OTR so bang for buck is not there the way you wanna go but you will get gains IMO just not worth the money spent. Xplode performance do them they are sponsors on here hit them up.

Not quite true alot of tuners have found the stock box, with smooth intake pipe, and even a Monaro CAI or other modifications will yeild quite significant results. The biggest difference isnt so much the flow, but the IAT, a standard pod enclosure (and one would assume stock airbox) records temps about 20c higher than ambiant tempreture, where as the OTR is +/- 1c IAT above ambiant tempreture.

I have a Monaro CAI for sale if you want to hit me up, it mounts directly to the stock LSx airbox and seals in behind the headlight (I had planned on using it on my 5ltr but didnt want to chop it up too much).

[blacknight]

What will happen if I delete / remove the MAF unit altogether just to increase the airflow. Shouldnt the car's ECU recalibrate for more air? Are there any gains to this? smoother idle, more power etc?

[ryan101]

Not quite true alot of tuners have found the stock box, with smooth intake pipe, and even a Monaro CAI or other modifications will yeild quite significant results. The biggest difference isnt so much the flow, but the IAT, a standard pod enclosure (and one would assume stock airbox) records temps about 20c higher than ambiant tempreture, where as the OTR is +/- 1c IAT above ambiant tempreture.

I have a Monaro CAI for sale if you want to hit me up, it mounts directly to the stock LSx airbox and seals in behind the headlight (I had planned on using it on my 5ltr but didnt want to chop it up too much).

hey mate, whats does it look like?? and pics and how much you want?

[Cúl-Báire]

What will happen if I delete / remove the MAF unit altogether just to increase the airflow. Shouldnt the car's ECU recalibrate for more air? Are there any gains to this? smoother idle, more power etc?

If you just remove the MAF without tuning, your car will run like arse and extremely rich. A MAFless tune simply removes the MAF from the ECU's calculations, and tells the computer to use other sensors available to perform calcualtions in order to get the air/fuel/spark right.

[blacknight]

I see, my area caters to Jap import cars so I'd have to get more power from other sources. (SIGH)

[Matt346]

sorry it probly has been covered a million times but i can't find anywhere!
i have a very very stock s2 vx ss, i don't wanna spend big $$ all i want to do is nice cat back, high flow panel filter ( it has some kind of cai looks factory) ( 1 duct facing up next to the radiator and 1 pipe going behind the head light)

i want the car to look stock still so the air box has to stay,
so my question is, is there maf tuning and what do they tune? what does it cost and where in melb (near epping im from) can i talk to?

thanks

Sorry to dig up an old thread but I was gonna start a similar one otherwise.. I'm in a similar situation, thinking of going a MAF tune on a VXII LS1. Got very similar reasons as to why I wanna go a MAF tune rather than MAFless, I was wondering what other people ended up doing, like where they got their MAF tune? And what kinda results they found...

So far my car has a full exhaust, (Tri Y extractors, 2.5" high flow cats into 3.5" single Sureflo) and other than that just the Monaro CAI. The tune would be the last mod I did, not looking to go any further so probably no need to go all out on MAFless, from what I've read I make out that MAF tuning can produce good results with simple bolt ons, where MAFless becomes a necessity when you're going further, cam etc.

Cheers

[vscom88]

I've got a vs ecotec with modifications done the engine, custom tune etc etc etc

One thing thats done is the mafless tune and i find it works better / also sounds better

The air is less restrictive on intake and is now measured by a MAP (Manifold Absolute Pressure) sensor calculating the air once its inside the plenum chamber.

[Drewie]

Just something to think about and probably would never happen, but by removing the MAF you could run into trouble if you were unfortunate to get pulled up by the law or EPA, as if they new what to look for the MAF missing is a big give away. Last thing you need is to have to have an EPA emissions test.

[vscom88]

Just something to think about and probably would never happen, but by removing the MAF you could run into trouble if you were unfortunate to get pulled up by the law or EPA, as if they new what to look for the MAF missing is a big give away. Last thing you need is to have to have an EPA emissions test.

How has that got anything to do with emissions tho ? You simply have a Map instead of a Maf

[Sabbath']

How has that got anything to do with emissions tho ? You simply have a Map instead of a Maf

And the car was designed to work on both a MAF and a MAP sensor to meet emissions laws. You're taking away one sensor so it isnt how it was designed or approved.

[vscom88]

I've never heard of that ..
Seen plenty of cars pass rwc with maps instead of mafs

[hakhawk]

I've never heard of that ..
Seen plenty of cars pass rwc with maps instead of mafs

theres a difference between "passing rwc" and being legal, seeing as some rwc places will overlook things that arent going to cause danger. deleting the maf is modifying the way the ecu controls the air/fuel ratios, which in turn affects emissions output.

[Matt346]

theres a difference between "passing rwc" and being legal, seeing as some rwc places will overlook things that arent going to cause danger. deleting the maf is modifying the way the ecu controls the air/fuel ratios, which in turn affects emissions output.

That's correct hakhawk, MAFless tuning on a vehicle that originally had a MAF is technically illegal but it seems most cars still RWC'd with it and sold no problems.

The EPA laws are here:
http://epanote2.epa.vic.gov.au/EPA/publications.nsf/2f1c2625731746aa4a256ce90001cbb5/c90ec843f3bbbe8fca256d9f00181c59/$FILE/1031.pdf

I'm still interested in getting a MAF tune, since with my car I don't see any point going the extra dollars to go an OTR + MAFless for the gain it gets over a MAF tune. Also I like the stock look and the appeal of staying within the laws a bit more.

Still wondering, who's got a MAF tune and where'd they get it done? I'm looking for a place in Melbourne.

[hakhawk]

you dont NEED an otrcai when you go mafless, its just thats what most people do as it offers even less restriction than a stock airbox.

id suggest looking for the howto on the 2 hole airbox mod on the forum.

[koztek55]

Still wondering, who's got a MAF tune and where'd they get it done? I'm looking for a place in Melbourne.

Almost every LS/performance tuner gives you the option whether you want a maf tune or a mafless tune, there really isnt a huge difference in price considering places like gm motorsport were doing deals with an otr and mafless tune for $900, police usually dont pic on having no maf, i actually was EPA'd recently by the actual epa officer, they grilled me for not having a maf, the cops had a look and didnt give 2 sh*ts, they police are more worried about excessive noise....

hope that helps in some way, but yes as stated you can also go for the 2 hole mod.

IMO the car runs a lot better without the maf in the way, but thats just my 2 cents.

cheers,
kosta